When I did my last water pump I loc tited studs into the housing. Installed billet housing and secured with nuts
Its not really that big an issue to do it my way, air tools and bolts that have previously been removed helps. I have parkinsons and bi lateral spinal stenosis so anything that makes life easier i do. Time is my friendI have had a back surgery, L4-L5 fusion, that limits my bending. I have to be careful to work slow and smart. I had no trouble changing mine over the top.